Spoke for a wheel



FIG. 1 is a front elevational view of a spoke for a wheel, showing my new design, the rear elevational, top plan and bottom plan views being a mirror image thereof;

FIG. 2 is a left side elevational view thereof; and,

FIG. 3 is a right side elevational view thereof. 

The ornamental design for a spoke for a wheel, as shown and described. 